Sometimes it happens that we have a crash in the production environment on Access Point or Controller. The consequences might be minor if some low important module crashed, which is barely used. On the other hand the controller may completely crash and reboot itself, which may cause down time for the end users or services. … Continue reading Crash →

Most of 802.11ac APs requires more power for PoE. The standard 802.3af isn't enough for the newer APs, due to higher MIMO gain requirements. If the AP was booted with 802.3af, it will run in a power save mode. For different types of APs, there are different features, which will be disabled. The end users … Continue reading Aruba 802.11ac APs without 802.3at →

The CWNP is a certification body focused on Wi-Fi neutral, vendor-free certification. It mostly focuses how the things work in Layer 1 and Layer 2, how to design it properly and how to troubleshoot it if necessary. I passed CWNA in March 2011, after that CWSP in February 2014. Than it was a long break … Continue reading My road to CWNE #312 →

Each vendor has different naming convention for the AP functionality. Some of the features used by the APs might require licence or a specific mode. This article presents the world of Aruba Networks and introduction to their naming convention and role in the network. Picture taken from Aruba training materials CAP - Campus AP - … Continue reading Aruba 8.X AP terminology →

While in tunnel mode, each vendor will send the traffic to the wireless controller, which will act as a portal to translate wireless frame to the wired frame and send it to the LAN. In this example we have 3 SSIDs: corporate, guest, mobile. For each SSID for each band the AP will create a … Continue reading Aruba GRE tunnels for tunnel mode →